dtolnay/cxx

Support member typedefs (nested types)

Ouverte

#593 ouverte le 23 déc. 2020

 (0 commentaire) (1 réaction) (0 personne assignée)Rust (253 forks)batch import
help wanted

Métriques du dépôt

Stars
 (4 472 étoiles)
Métriques de merge PR
 (Merge moyen 8m) (3 PRs mergées en 30 j)

Description

For example the following binding involving https://en.cppreference.com/w/cpp/container/map/at on a std::map:

class json {
public:
  using number = double;
  using string = std::string;
  using array = std::vector<json>;
  using object = std::map<string, json>;
  ...
private:
  std::variant<std::monostate, number, string, array, object> value;
};
#[cxx::bridge]
mod ffi {
    unsafe extern "C++" {
        type json;

        fn at<'a>(self: &'a json::object, key: &CxxString) -> &'a json;
    }
}

Maybe also as:

#[cxx::bridge]
mod ffi {
    unsafe extern "C++" {
        type json;

        #[cxx_name = "json::object"]
        type object;

        fn at<'a>(self: &'a object, key: &CxxString) -> &'a json;
    }
}

Guide contributeur